Deep-well pump.



v O. A. KRAEER.

DEEP WELL PUMP.

APPLICATION FILED nov 25. 1914.

Patented Dec. 21, 1915'.

Witnesses:

Ihventor.

OLIVER A. KBAEER, 0F BARTLESVILLE, OKLAHOMA.

DEEP-WELL PUMP.

Specification of Letters Patent.

Patented Dec. 21, 1915.

Application filed November 25, 1914. Serial N 0. 874,065.

To all whom it may concern:

Be it known that I, OLIVER A. KRAEER, a citizen of the United States of America, and a resident of the city of Bartlesville, in the county of \Vashington and the State of ()klahoma, have invented a new and useful Improvement in Deep-\Vell Pumps; and I hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make use of the same, reference being had to the accompanying drawings, forming a part of this specification.

More particularly my invention is a development of the principles outlined in a patent granted to me on April 13, 1915, O. A. Kraecr, pumps, No. 1,135,821, and an application of those principles to the pump-barrel now generally used.

The general object of my invention is the same as that outlined in my former patent, hereinbefore mentioned, namely, to form a combination in a pump which will prevent the wearing out of the valve-cups in the piston by the sand and sediment contained in the fluid passing around the sides of the piston and the necessity of frequently pulling the rods to replace the worn out valvecups.

The general results obtained from the combination described in this specification are the same as those described in my former patent, but are more satisfactory in this: that the piston and sand-protector of the pumpdescribed in this specification can be inserted in the tubing and working-barrel of the pump ordinarily used, already in place in the well, Without the necessity of pulling the tubing from the well or putting in a new pump-barrel.

The accompanying drawing represents a =central vertical section of the same; Figure 1 representing the lower and Fig. 2 the upper part of the pump, wherein- A, represents the main shaft extending from "the bottom to the. top of the well -throughiwhich the fluid is drawn to the surface. 2

A, represents the perforated intake pipe at the bottom. I I

B, represents a valve opening upward from the intake pipe into the pump-barrel.

B, represents the cage of the valve, B.

C, represents the piston-pipe, a pipe of convenient length, around the bottom of which are arranged two series of valve-cups,

bottom of the piston-pipe.

D, represents a valve opening upward from the piston pipe into the tubing above, the cage of which valve is attached to the bottom of the piston-rods.

D, represents the cage of the valve, D.

The sand-protector is composed of two members: The lower member of the sandprotector is a pipe or sleeve around the pis ton-pipe extending above the pump-barrel for a convenient distance, near the bottom of which is a shoulder, I, having a beveled lower surface resting on a beveled seat in the top of the pump-barrel. The lower member of the sand-protector extends down into the pump-barrel and one or more valve-cups, J, are adjusted thereon immediately below the shoulder, with the usual washers, K, between the valve-cups, and a collar, L, screwed up against the bottom valve-cup. The valve-cups, J, are faced upward to prevent-leakage back into the pump-barrel from the main pipe above.

I C, represents the upper member of the sand-protector, being a pipe or sleeve around the piston-pipe and telescoping over the lower member of the sand-protector securely attached to the piston-pipe below the valve, D, and closed at the top, the inside diameter being the same as the inside diameter of the pump-barrel, thus making the expansionin the top ofthe sand-protector equal to the contraction in the upper part of the pumpbarrel on the upward stroke of the piston," and vice versa.

Suflicient space is left between the piston-pipe and the two members of the sand-protector, and between the upper member of the sand-protector and the main pipe to permit the passage of the fluid.

-P, represents a collar screwed down on the top of the lower member of the sand-protector, immediately below which are two series of reversed valve-cups, the upper series, M, facing upward, and the lower series, M, facing downward, with the usual washers, N, and N, between, and held in place, between the two members of the sand-protector, between the collar, P, and a shoulder, I, on the lower member of the sand-protector. I

0, represents a washer between the two series of valve-cups.

R, represents the holes'in theintake pipe below the pump-barrel through fluid enters the pump. 7

The operation of the pump is as follows: On the upward stroke of the piston the weight of the fluid above closes the valve, D, the valve, B, opens, through which the fluid enters the pump-barrel. On the downward stroke of the piston the valve, B, closes, the valve, D, opens and the fluid in the pump-barrel is forced through the pistonpipe, through the valve, D, into the mam pipe above the sand-protector. The weight of the rods carries the downward stroke and power is applied to carry the upward stroke of the piston. When the piston and sand-protector are forced into the tubing, as they descend into the fluid, the several parts .of the piston and sand-protector are filled with the fluid, but after the piston is set in the pump-barrel, the same fluid remains in the sand-protector held thereby the valve-cups between the two members of the sand-protector, and it constantly shifts from the upper part of the pump-barrel into the upper part of the sand-protector, and vice versa, through the passage between the piston-pipe and the lower member of the sand-protector, on the upward and downward strokes of the piston.

I claim as new'and desire to secure by Letters Patent:

1. A combination in a pump consisting of: a perforated intake pipe; a pump-barrel; and a pipe extending up to the top of the well; a valve in the bottom of the pumpbarrel opening upward from the intake pipe;

which the a p ston-pipe; a piston composed of valvetwo members, the lower member being a pipe cups adjusted around the bottom of the piston-pipe; a valve opening upward in the piston-pipe; a piston rod extending to 'the top of the well; a sand-protector composed of or sleeve around the piston-pipe, with a shoulder around the bottom thereof, which rests on a seat in the top of the pump-barrel;

closed and attached to the piston-pipe at the top, and telescoping over the lower member ofthe sand-protector; with space between the piston-pipe-and the two members of the sand-protector, substantially as described;

A piston and sand-protector for a pump consisting of: a piston-pipe; a piston composed of valve-cups adjusted around the bottom of the piston-pipe; a. valve opening upward'in the piston-pipe; a piston 'rodextending to the top of the well; a sand-protector composed of two members, the lower member being a pipe or sleeve around the piston-pipe, with ashoulder around the bottom thereof, which rests on a seat in the top of the pump-barrel; the upper member of the sand-protector being a pipe or sleeve around the piston-pipe, closed and attached to the piston-pipe at the top and telescoping over the lower member of the sand-protector; with space between the piston-pipe and the two members of the sand-protector, substantially as described.

3. Acombination in a pump consisting of:

a perforated intake pipe; a pump-barrel;

and a pipe extending up to the top of the well; a valve in the bottom of the pumpbarrel opening upward from the intakepipe; a piston-pipe; a piston composed of valve-cups adjusted around the bottom of the piston-pipe; a valve opening upward in the piston-pipe; a piston-rod extending to the top of the well; a sand protector combers of the sand-protector, substantially as described.

4. A piston and sand-protector for a pump. consisting of: a piston-pipe; apiston composed of valve-cups adjusted around the bottom of the piston-pipe; a valve opening upward in the piston-pipe; a piston-rod extending to the top of the well; a sand-protector composed of two members, the lower member being a pipe 'or sleeve around the piston-pipe, with a shoulder around the bottom thereof, which rests on a seat in the top of the pump-barrel; the upper member of the sand-protector being a pipe or sleeve bers of the sand-protector, substantially as around the piston-pipe, closed and attached described. 10 to the piston-pipe at the top, having'the same Signed at Bartlesville, Oklahoma, this inside diameter as the pump-barrel and tele- 20th day of November, 1914:.

5 scoping over the lower member of the sand- OLIVER A. KRAEER.

protector; with space between the piston- 'Witnesses: pipe and the two members of the sand-pro- PETER Q. NYOE,

tector, with packing between the two mem- GROVER LEDLIE. 

